- California Urban Water Conservation Council information on water-efficient flush toilets
- California Urban Water Conservation Council the Council's goal is to integrate urban water conservation Best Management Practices into the planning and management of California's water resources.
- Guide to Estimating Irrigation Water Needs of Landscape Plantings in California (.pdf) Department of Water Resources, State of California
- Santa Clara Valley Water Conservation Programs provides water conservation tactics and lists events and workshops offered
- Soil and Water Conservation Society (SWCS)
- Virtual tour of home water conservation
- Water Efficient Landscaper (WEL) Marin Municipal Water District, provides a list of residential and commercial landscapers in Marin County who have been trained in the Water Efficient Landscaper program.
- Water Efficient Landscapes - Department of Water Resources, State of California
- WaterReuse Association
- Texas Water Development Board, a voluminous website that provides information about water issues in Texas and guidelines for developing water-saving techniques with renovation or new construction projects
- American Rainwater Catchment Systems Association (ARCSA) this website offers membership opportunities, equipment suppliers, news, and publications
- Center of Excellence for Sustainable Development a project of the U.S. Department of Energy, provides information about water efficiency programs throughout the country
- EPA, Office of Water provides information and resources about water quality throughout the country
- Water Wiser the Water Efficiency Clearinghouse